title: Postoperative pneumonias.
mesh_terms: D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D001945:Breathing Exercises; D004315:Doxapram / Q000627:therapeutic use; D004322:Drainage; D005260:Female; D006801:Humans; D008297:Male; D011014:Pneumonia / Q000517:prevention & control*; D011183:Postoperative Complications / Q000517:prevention & control
chemical_list: D000900:Anti-Bacterial Agents; D004315:Doxapram